jQuery 計時器（jquery timers）簡單應用
阿新 • • 發佈：2019-01-22
/**
* jQuery.timers - Timer abstractions for jQuery
* Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
* Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
* Date: 2009/10/16
*
* @author Blair Mitchelmore
* @version 1.2
*
**/
jQuery.fn.extend({
everyTime: function(interval, label, fn, times) {
jQuery.timer.add(this, interval, label, fn, times);
});
},
oneTime: function(interval, label, fn) {
returnthis.each(function() {
jQuery.timer.add(this, interval, label, fn, 1);
});
},
stopTime: function(label, fn) {
jQuery.timer.remove(this, label, fn);
});
}
});
jQuery.extend({
timer: {
global: [],
guid: 1,
dataKey: "jQuery.timer",
regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/,
powers: {
// Yeah this is major overkill...'ms'
'cs': 10,
'ds': 100,
's': 1000,
'das': 10000,
'hs': 100000,
'ks': 1000000
},
timeParse: function(value) {
if (value == undefined || value ==null)
returnnull;
var result =this.regex.exec(jQuery.trim(value.toString()));
if (result[2]) {
var num = parseFloat(result[1]);
var mult =this.powers[result[2]] ||1;
return num * mult;
} else {
return value;
}
},
add: function(element, interval, label, fn, times) {
var counter =0;
if (jQuery.isFunction(label)) {
if (!times)
times = fn;
fn = label;
label = interval;
}
interval = jQuery.timer.timeParse(interval);
if (typeof interval !='number'|| isNaN(interval) || interval <0)
return;
if (typeof times !='number'|| isNaN(times) || times <0)
times =0;
times = times ||0;
var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {});
if (!timers[label])
timers[label] = {};
fn.timerID = fn.timerID ||this.guid++;
var handler =function() {
if ((++counter > times && times !==0) || fn.call(element, counter) ===false)
jQuery.timer.remove(element, label, fn);
};
handler.timerID = fn.timerID;
if (!timers[label][fn.timerID])
timers[label][fn.timerID] = window.setInterval(handler,interval);
this.global.push( element );
},
remove: function(element, label, fn) {
var timers = jQuery.data(element, this.dataKey), ret;
if ( timers ) {
if (!label) {
for ( label in timers )
this.remove(element, label, fn);
} elseif ( timers[label] ) {
if ( fn ) {
if ( fn.timerID ) {
window.clearInterval(timers[label][fn.timerID]);
delete timers[label][fn.timerID];
}
} else {
for ( var fn in timers[label] ) {
window.clearInterval(timers[label][fn]);
delete timers[label][fn];
}
}
for ( ret in timers[label] ) break;
if ( !ret ) {
ret =null;
delete timers[label];
}
}
for ( ret in timers ) break;
if ( !ret )
jQuery.removeData(element, this.dataKey);
}
}
}
});
jQuery(window).bind("unload", function() {
jQuery.each(jQuery.timer.global, function(index, item) {
jQuery.timer.remove(item);
});
});
* jQuery.timers - Timer abstractions for jQuery
* Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
* Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
* Date: 2009/10/16
*
* @author Blair Mitchelmore
* @version 1.2
*
**/
jQuery.fn.extend({
everyTime: function(interval, label, fn, times) {
jQuery.timer.add(this, interval, label, fn, times);
});
},
oneTime: function(interval, label, fn) {
returnthis.each(function() {
jQuery.timer.add(this, interval, label, fn, 1);
});
},
stopTime: function(label, fn) {
jQuery.timer.remove(this, label, fn);
});
}
});
jQuery.extend({
timer: {
global: [],
guid: 1,
dataKey: "jQuery.timer",
regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/,
powers: {
// Yeah this is major overkill...'ms'
'cs': 10,
'ds': 100,
's': 1000,
'das': 10000,
'hs': 100000,
'ks': 1000000
},
timeParse: function(value) {
if (value == undefined || value ==null)
returnnull;
var result =this.regex.exec(jQuery.trim(value.toString()));
if (result[2]) {
var num = parseFloat(result[1]);
var mult =this.powers[result[2]] ||1;
return num * mult;
} else {
return value;
}
},
add: function(element, interval, label, fn, times) {
var counter =0;
if (jQuery.isFunction(label)) {
if (!times)
times = fn;
fn = label;
label = interval;
}
interval = jQuery.timer.timeParse(interval);
if (typeof interval !='number'|| isNaN(interval) || interval <0)
return;
if (typeof times !='number'|| isNaN(times) || times <0)
times =0;
times = times ||0;
var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {});
if (!timers[label])
timers[label] = {};
fn.timerID = fn.timerID ||this.guid++;
var handler =function() {
if ((++counter > times && times !==0) || fn.call(element, counter) ===false)
jQuery.timer.remove(element, label, fn);
};
handler.timerID = fn.timerID;
if (!timers[label][fn.timerID])
timers[label][fn.timerID] = window.setInterval(handler,interval);
this.global.push( element );
},
remove: function(element, label, fn) {
var timers = jQuery.data(element, this.dataKey), ret;
if ( timers ) {
if (!label) {
for ( label in timers )
this.remove(element, label, fn);
} elseif ( timers[label] ) {
if ( fn ) {
if ( fn.timerID ) {
window.clearInterval(timers[label][fn.timerID]);
delete timers[label][fn.timerID];
}
} else {
for ( var fn in timers[label] ) {
window.clearInterval(timers[label][fn]);
delete timers[label][fn];
}
}
for ( ret in timers[label] ) break;
if ( !ret ) {
ret =null;
delete timers[label];
}
}
for ( ret in timers ) break;
if ( !ret )
jQuery.removeData(element, this.dataKey);
}
}
}
});
jQuery(window).bind("unload", function() {
jQuery.each(jQuery.timer.global, function(index, item) {
jQuery.timer.remove(item);
});
});